Although it sounds like a good idea we can assure you the cons heavily outweigh the pros.
Reshingle vs new roof.
2nd layer of shingles.
More difficult to check deck when you tear off the old roof you get a look at what s underneath.
In this video this old house general contractor tom silva explains how to reshingle a roof steps.
What you need to know dave law last updated january 24 2020 here is a scenario we hear about all the time.
Cover roof deck with 30 pound felt underlayment.
Pry off old roof shingles with pitch fork.
Staple felt every 6 to 8 inches.
By placing shingles on top of a damaged roof you ll affect the way the roof looks.
Since it s being put on top of another less than perfect roof it s likely that it may not look as good as a brand new roof would.
Pro tip for low sloped roofs photo by carl tremblay while asphalt shingle is a good roofing material it s not the best choice in all situations.
Re roofers have tricks to lay new roof shingles over old so that the same step ups between courses are maintained but if any old shingles are cupped curled or otherwise misshapen those defects will telegraph through to the new layer.
A bundle or two of new shingles stored flat in the garage comes in handy if your new roof gets damaged later.
Reroofing is the process of layering one set of new shingles over a set of existing shingles.
Because there is no tear off reroofing can go much faster and be much less expensive than a complete roof replacement.
In fact reports show that a new roof yields more than 80 of its original cost upon resale.
Your contractor can then use them for exact match patch repairs.
If you want to reshingle your asphalt roof with new shingles it ll cost an average of about 7200 for a 2000 square foot house excluding old roof removal.
In general it is not a good roofing practice to overlay a traditional asphalt shingle roof versus a complete tear off and replacement with a new roof for the very reason you stated.
Whether you re going for a fiber cement composite shingle installation or a composite shingle asphalt roof the total expenditure can vary.
If you don t take your roof down to the sheathing you will never know if you have proper underlayment or are experiencing sheathing rot or ice or water damage.
Roof tear off vs.
Nail down loose roof sheathing to rafters.
When contemplating a new roof many people hope to simply do a shingle over and avoid the extra cost and mess of tearing off the existing roof and starting from scratch.
However when done right it also yields the biggest return on your investment.
Meanwhile more than 30 of real estate agents accredited roof restorations for their quick sales.
You can t examine the decking to determine if there is any damage that needs repaired.
This contractor told me i don t need to tear off my existing shingles when we re do our roof.
